TextInputEditText Error

Question

Error Rendering in TextInputLayout in API 21 in studio. However it is working perfect in API level 23. In real time working perfect on both

 The following classes could not be instantiated:
- android.support.design.widget.TextInputEditText (Open Class, Show  Exception, Clear Cache)
- android.support.design.widget.TextInputLayout (Open Class, Show Exception, Clear Cache)
 Tip: Use View.isInEditMode() in your custom views to skip code or show sample data when shown in the IDE  
Exception Details java.lang.StringIndexOutOfBoundsException: String index  out of range: 0   at java.lang.String.charAt(String.java:658)   at com.android.internal.util.XmlUtils_Delegate.convertValueToInt(XmlUtils_Delegate.java:47)   at  com.android.internal.util.XmlUtils.convertValueToInt(XmlUtils.java:88)   at android.content.res.BridgeTypedArray.getInt(BridgeTypedArray.java:204)   at android.widget.TextView.<init>(TextView.java:1051)   at android.widget.EditText.<init>(EditText.java:65)   at android.widget.EditText.<init>(EditText.java:61)   at android.support.v7.widget.AppCompatEditText.<init>(AppCompatEditText.java:62)   at android.support.v7.widget.AppCompatEditText.<init>(AppCompatEditText.java:58)   at android.support.design.widget.TextInputEditText.<init>(TextInputEditText.java:39)   at java.lang.reflect.Constructor.newInstance(Constructor.java:423)   at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:806)   at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)   at android.view.LayoutInflater.rInflate(LayoutInflater.java:782)   at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:809)   at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)   at android.view.LayoutInflater.rInflate(LayoutInflater.java:782)   at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:809)   at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)   at android.view.LayoutInflater.rInflate(LayoutInflater.java:782)   at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:809)   at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)   at android.view.LayoutInflater.rInflate(LayoutInflater.java:782)   at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:809)   at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)   at android.view.LayoutInflater.rInflate(LayoutInflater.java:782)   at android.view.LayoutInflater.inflate(LayoutInflater.java:504)   at android.view.LayoutInflater.inflate(LayoutInflater.java:385)

I am just taking basic details of a person in this . For which I have used various EditText....................................................................................................................................

<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="@color/background_first">

<LinearLayout
    android:id="@+id/update_details_fragment"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginLeft="8dp"
    android:layout_marginRight="8dp"
    android:orientation="vertical">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="30sp"
        android:text="@string/u_fields"
        android:padding="10dp"
        android:textColor="@color/navy_blue"
        android:textAlignment="center"
        android:textStyle="bold"/>

    <View
        android:layout_width="match_parent"
        android:layout_height="2dp"
        android:background="@color/navy_blue"/>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="20sp"
        android:padding="10dp"
        android:textColor="@color/black"
        android:text="@string/u_fields_text1"
        android:layout_marginTop="7dp"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:theme="@style/Widget.Design.TextInputLayout"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginTop="8dp">

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="0.5">

            <android.support.design.widget.TextInputLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <android.support.design.widget.EditText
                    android:id="@+id/update_first_name"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:hint="@string/first_name_hint"
                    android:inputType="textCapCharacters"
                    android:imeActionId="@+id/update_first_name_action"
                    android:imeOptions="actionNext"
                    android:maxLength="20"
                    android:maxLines="1"
                    android:singleLine="true" />
                <requestFocus/>
            </android.support.design.widget.TextInputLayout>

        </LinearLayout>

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="0.1">
        </LinearLayout>

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="0.5">

            <android.support.design.widget.TextInputLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <android.support.design.widget.EditText
                    android:id="@+id/update_last_name"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:hint="@string/last_name_hint"
                    android:imeActionId="@+id/update_last_name_action"
                    android:imeOptions="actionNext"
                    android:inputType="textCapCharacters"
                    android:maxLines="1"
                    android:maxLength="15"
                    android:singleLine="true" />

            </android.support.design.widget.TextInputLayout>
        </LinearLayout>

     <Button
        android:id="@+id/update_button"
        style="?android:textAppearanceSmall"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/done"
        android:textColor="@color/black"
        android:layout_margin="7dp"
        android:textStyle="bold" />

</LinearLayout>
</FrameLayout>

Answer 1

RisingSun for your information the TextInputEditText is added in version 23.2.0 hence it can not support below 23.2.0 version..

for more follow this link

https://developer.android.com/reference/android/support/design/widget/TextInputEditText.html